Abstract: Flow control mechanism (100) for a downhole tool includes a housing (102), an inner liner (104), and a rotatable sleeve (106). The inner liner (104) is provided in and remains stationary relative the housing (102). The rotatable sleeve (106) can be arranged to rotate about the inner liner (104) to provide a closed configuration (900), a first open configuration (1400), and a second open configuration (1900). The closed configuration (900) can enable through-flow of fluid through the flow control mechanism (100) to a distal tool (50). The first open configuration (1400) can enable partial through-flow of fluid through the flow control mechanism (100) to the distal tool (50) and partial through-flow of fluid in a substantially radial direction. The second open configuration (1900) can prevent through-flow of fluid through the flow control mechanism to the distal tool (50) and to enable through-flow of fluid in a substantially radial direction.

Abstract: Methods and apparatuses, including computer program products, are described for measuring greenhouse gas. A calibration device receives a first sample of atmospheric gas from a first port exposed to the earth's atmosphere. The calibration device receives a second sample of atmospheric gas from a second port exposed to the earth's atmosphere. The calibration device routes the first sample and the second sample to a measurement device for greenhouse gas analysis. The measurement device determines a characteristic of a greenhouse gas present in at least one of the first sample and the second sample. The measurement device transmits data associated with the determined characteristic of the greenhouse gas to a computing device for determining sinks and sources of the gas.

Abstract: The present disclosure relates to a monitor for a blowout preventer of a wellbore. The blowout preventer includes a housing, rams, and an actuator comprising a cylinder with a piston. The piston is operatively connectable with the ram and movable therewith. The monitor includes a monitor base operatively connectable to the cylinder (the monitor base having an interior side inside the cylinder and an exterior side outside the cylinder), an interior plate positionable inside the cylinder about the interior side of the base (the interior plate operatively connectable to the piston and movable therewith), an exterior plate positionable outside the cylinder about the exterior surface of the monitor base (the exterior plate coupled by magnets to the interior plate and rotatable therewith), and a trigger sensor operatively connectable about the monitor base and the exterior plate to detect rotation thereof whereby a position of the ram may be determined.

Abstract: A system and method for the software and hardware-based management and control of overall energy consumption in a telecommunications network is described. The energy consumption management in broadband telecommunications networks is accomplished via an adaptive power system interface and network energy controller that has access to the energy management systems, subsystems, features, individual components and configurations of equipment and services within the network, and provides energy consumption control of an entire network or a portion thereof using a plethora of different types of equipment, equipment or software features, equipment cards, ports, devices, systems, and entire facilities within a network.

Abstract: Described herein are methods and systems, including computer program products, for optimizing and controlling the energy consumption of a building. A computing device generates thermal response coefficients for the building based on energy characteristics of the building and weather data associated with the location of the building. The computing device an energy response for each of a plurality of different points in time based on the thermal response coefficients and forecasted weather conditions. The computing device selects minimal energy requirements based on an energy consumption cost. The computing device determines a series of temperature set points based on the corresponding energy response and the minimal energy requirements. The computing device transmits the series of temperature set points to a thermostat, which adjusts operating parameters using each series of temperature set points when a time value matches the point in time associated with each series of temperature set points.

Abstract: Described herein are methods and systems, including computer program products, for optimizing and controlling the energy consumption of a building. A first computing device generates a set of thermal response coefficients for the building based on energy characteristics of the building and weather data associated with the location of the building. The first computing device predicts an energy response of the building based on the set of thermal response coefficients and forecasted weather associated with the location of the building. The first computing device selects minimal energy requirements of the building based on an energy consumption cost associated with the building. The first computing device determines one or more temperature set points for the building based on the energy response and the minimal energy requirements. The first computing device transmits the one or more temperature set points to a thermostat of the building.

Abstract: A cylinder assembly includes a housing defining first and second outer cylindrical surfaces having a longitudinal axis and a shim having a retaining ring fitted over the first outer cylindrical surface. The shim includes a plurality of connector spokes extending from the retaining ring, and a corresponding plurality of shim elements configured at the ends of the plurality of connector spokes. The connector spokes extend radially from the retaining ring relative to the longitudinal axis when the shim is in a pre-installation configuration. The connector spokes are bendable such that the shim elements extend longitudinally and are positioned next to the second outer cylindrical surface when the shim is in an installation configuration. Shims, methods of assembly, bicycles and other components are also provided.

Abstract: Compression set downhole clutch (100) can include an upper body (201), a lower body (202), and a hydraulic member (205). The upper body (201) can include at least one engagement surface (204). The lower body (202) can include at least one engagement surface (203). The at least one engagement surface (204) of the upper body (201) and the at least one engagement surface (203) of the lower body (202) can each be configured to couple with one another and rotate in unison in an engaged configuration (102). The hydraulic member (205) can be configured to be responsive to a predetermined pressure; the hydraulic member (205) can also be configured to disengage the engagement surface (204) of the upper body (201) from the engagement surface (203) of the lower body (202).

Abstract: Turbine engine assemblies including a turbine engine assembly having a turbine core comprising a compressor section, a combustion section, a turbine section, and a nozzle section, which are axially aligned, wherein the combustion section comprises a generally annular case having inner and outer walls, a heat exchanger comprising multiple passages in proximity to at least one of the inner and outer walls, with the passages arranged about at least a portion of the case and in fluid communication with each other such that fluid may flow through the passages and a cryogenic fuel system having a cryogenic fuel tank with a supply line coupled to one of the passages, wherein cryogenic fuel may be supplied from the cryogenic fuel tank, through the supply line, to the passages of the heat exchanger, where the fuel in the passages may be heated by the combustion section. The heat exchanger may be a single or multistage vaporizer.

Abstract: A turbine engine assembly including a turbine core and a cryogenic fuel system. The turbine core includes: a compressor section; a combustion section; and a turbine section, which are axially aligned. The a cryogenic fuel system includes: a cryogenic fuel reservoir; a vaporizer heat exchanger; a liquid supply line operably coupling the fuel reservoir to an input of the vaporizer heat exchanger; a gas supply line operably coupling an output of the vaporizer heat exchanger to the combustion section; and a second heat exchanger thermally connecting the liquid supply line and the gas supply line to transfer heat from the gas supply line to the liquid supply line.

Abstract: An electrical power system for an aircraft including a turbine engine coupled to the aircraft and providing propulsive thrust and emitting heat during operation to define a high temperature source, a cryogenic fuel system located within the aircraft and providing fuel for the turbine and emitting heat at a lower temperature than the heat from the turbine engine to define a low temperature source and an electrical power generator located on the aircraft and having a thermodynamic generator using the temperature difference to generate electrical power and a method for producing electric power.

Abstract: A blowout preventer and seal assembly for sealing a wellbore penetrating a subsurface formation is provided. The blowout preventer includes a housing having a flow path therethrough in fluid communication with the wellbore and a sealing assembly positionable in the housing about the flow path. The sealing assembly includes a piston slidably positionable in the housing and a packer element. The packer element includes a plurality of fingers and a packer seal. The fingers include a housing portion and a piston portion. The housing portion is slidably movable along the housing and the piston portion is slidingly movable along the piston. The fingers are engageable by the piston and movable to a sealed position about the flow path whereby the packer seal is energized to form a seal about the blowout preventer.

Abstract: A treatment media, system, and method are disclosed which combines adsorptive capacity of a carbon media (e.g., biochar) with chemical treatment characteristics of a red mud substance, e.g., to remove metals and/or other contaminants from waters. The treatment media may also improve biological conditions of affected soils. In an example treatment method, a lignin based material is thermo-chemically decomposed to have a large weight fraction of carbon (e.g., the biochar), and an ore is processed to yield aluminum oxide comprising a variety of iron oxides and having high alkalinity in slurry (e.g., the red mud). The thermo-chemically decomposed lignin based material is combined with the mud material.

Abstract: Described herein are methods and systems, including computer program products, for optimizing and controlling a building's energy consumption and comfort. A computing device receives measurements from a plurality of sensors, at least some of which are located inside the building, where the measurements include temperature readings and comfort characteristics. The computing device generates a set of thermal response coefficients based on energy characteristics of the building, the measurements from the sensors, and weather data associated with the building's location. The computing device predicts an energy response of the building based on the set of thermal response coefficients and forecasted weather. The computing device selects minimal energy requirements of the building based on an energy consumption cost associated with the building and determines energy control points based on the energy response and the minimal energy requirements.

Abstract: The techniques herein relate to a blowout preventer a wellhead of a wellbore penetrating a subterranean formation. The blowout preventer includes a housing having a bore therethrough, a segment carrier positionable in the housing, and a piston. The segment carrier includes a carrier ring for receiving the mandrel and a plurality of segments pivotally movable radially thereabout. The piston is operatively connectable to the plurality of segments and actuatable for moving the plurality of segments between a disengaged and an engaged position about the mandrel.

Abstract: A blowout preventer for sealing a tubular of a wellbore is provided. The blowout preventer has a housing having a bore therethrough for receiving the tubular, at least one ram slidably positionable in the housing (each of the rams having a ram block for sealing engagement about the tubular), an actuator for selectively driving the ram block (the actuator comprising a piston slidably positionable in a cylinder), and a monitor for detecting the piston therein. The monitor has a visual indicator on an exterior of the cylinder. The visual indicator is operatively coupled to the piston for displaying a position of the piston as the piston travels within the cylinder whereby a position of the ram may be determined.

Abstract: Methods and apparatuses, including computer program products, are described for predicting the potential for severe weather. A computing device receives data associated with lightning activity, where the data includes lightning flash data. The computing device identifies cells of lighting activity based upon the lightning flash data and determines a movement speed, a movement direction, and a lightning rate of the cells of lightning activity based on the received data. The computing device compares the determined lightning rate to a threshold lightning rate, where the threshold rate is set based upon atmospheric conditions in a location of the cells of lightning activity. The computing device determines one or more geographical areas at risk based on the location, the movement speed, and the movement direction of the cells of lightning activity, and issues an alert to remote devices when the lightning rate exceeds a value of the threshold lightning rate.

Abstract: Techniques for shearing a tubular of a wellbore penetrating a subterranean formation with a blowout preventer are provided. The blowout preventer has a housing with a hole therethrough for receiving the tubular. The techniques relate to a blade assembly including a ram block movable between a non-engagement position and an engagement position about the tubular, a blade carried by the ram block for cuttingly engaging the tubular, and a retractable guide carried by the ram block and slidably movable therealong. The restractable guide has a guide surface for urging the tubular into a desired location in the blowout preventer as the ram block moves to the engagement position.

Abstract: A blowout preventer for sealing a tubular of a wellbore is provided. The blowout preventer has a housing having a bore therethrough for receiving the tubular, at least one ram slidably positionable in the housing (each of the rams having a ram block for sealing engagement about the tubular), an actuator for selectively driving the ram block (the actuator comprising a piston slidably positionable in a cylinder), and a monitor for detecting the piston therein. The monitor has a visual indicator on an exterior of the cylinder. The visual indicator is operatively coupled to the piston for displaying a position of the piston as the piston travels within the cylinder whereby a position of the ram may be determined.

Abstract: An implantable cardiac device is configured to classify cardiac arrhythmias using a plurality of arrhythmia discrimination algorithms. Data is provided that is associated with a plurality of cardiac arrhythmic episodes for which a cardiac electrical therapy was delivered or withheld by the implantable medical device based on the plurality of arrhythmia discrimination algorithms. A metric for each of the arrhythmic episodes is computed. The metric defines a measure by which the implantable cardiac device properly classified the arrhythmia. Potentially misclassified arrhythmic episodes of the plurality of cardiac arrhythmic episodes for which cardiac electrical therapy was inappropriately delivered or withheld are algorithmically identified using the metric.